For Berck sternes :
No gale warning.
For the night from Monday to Tuesday WNW wind force 2 continuing all night. Gusts reaching 15 knots in the early part of the night.
Smooth sea. Low, short swell from W. Excellent visibility becoming good in the middle of the night then good. Daytime of Tuesday 22 september : The sky will remain changeable.
Good clear periods alternating with cloudy spells, sometimes more dense in the afternoon. The risk of seeing rain will remain low. In the evening, cloudy spells, sometimes dense.
Possibility of showers NW wind force 2 continuing all day. Gusts reaching 15 knots in the morning. Smooth sea becoming smooth to slight in the middle of the day then slight. Low, short swell from W. Good visibility becoming excellent in the middle of the day.